LCD issue

I am working on a custom board which is based on i.MX6 solo board.Linux yocto is being used to boot the board . The kernel version is 3.14.38.The issue being faced is ,image size is larger.It is not fitting correctly on LCD.

Please follow the following document Porting LVDS LCD With Low Resolution to i.MX6 , In this document you can see that you need to modify the DTS file and also make some changes in the /arch/arm/mach-mx6/clock.c, there you can modify 3 ldb's clock source : &pll5_video_main_clk,&pll2_pfd_352M, &pll2_pfd_400M,